EP1898025A2 - Panel with impact noise and ambient noise insulation, covering consisting of panels, noise reducing coating, method for its manufacture and device therefor - Google Patents

Abstract

The panel (2) has an upper surface (4) that is covered with a resin-impregnated decorative paper (6) and an overlay (8), and a lower surface (10) that faces a floor. A bonding layer (14) is provided at the lower surface of the panel, and having an uneven outer surface (13) that faces away from the panel, and coated in sections with a damping layer (16) of polyolefins. Independent claims are also included for the following: (1) a panel manufacturing method; and (2) a panel manufacturing apparatus.

Description

The invention relates to a panel with a footfall sound insulation and a room sound insulation. Footstep sound radiates from the vibrated surface into neighboring rooms, especially those located behind or below the surface. Space sound radiates from the vibrating surface into the space bounded by this surface. Impact sound and room sound occur on all surfaces that are vibrated. Particularly disturbing they have on hard or dense surfaces. The invention therefore relates to panels that can be made of any material. In particular, however, panels made of wood or wood-based material are taken into account, in particular panels made of high-density fibreboard (HDF) or medium-density fibreboard (MDF). Typical applications are floating floors.

Both impact sound and room sound are usually perceived as unpleasant and should therefore be insulated as much as possible. It has long been known that panels that are glued to the substrate cause less room sound than floating panels. However, as the floating installation offers great advantages especially in the retrofitting of panels, approaches to room sound insulation of floating panels have also been developed. For this purpose, either separate layers of closed-porous or open-pored, lightweight materials (cork, polyurethane foam boards, PE foam, PP foam, rubber mats, fiber mats, nonwovens, other elastic mats) are currently laid under the panels. Alternatively, panels are provided directly with a footfall sound insulation, which is arranged on the side facing away from the space of the panel. Such panels with a impact sound insulation are z. B. from the DE 202 00 235 U1 known. There, a panel is described, which provided on the bottom with a plastic coating is having a non-planar, facing away from the panel outside. Panels coated with impact sound insulation are easy to install because there is no need to handle additional material.

Coatings of panels are likewise known for influencing the spatial noise. For example, the aim is to be able to influence or reduce the room sound by generating a particularly soft surface facing the room. Such a coating is in the DE 103 38 854 and the WO 2005/018833 described.

However, the known measures for the insulation of footstep and room sound are complex because different surfaces of the panel must be edited. Moreover, the described measures for room sound insulation can not be implemented on every panel. If the panel has a coated and / or decoratively designed surface, then for technical reasons it is often not possible to include a room sound insulation in this surface structure.

It is therefore an object of the invention to propose a panel and a covering with an easy to apply and widely applicable impact sound insulation and room sound insulation, a sound-reducing coating and a method and apparatus for its production.

This object is achieved with a panel having an upper side facing the room in the position of use and a lower side facing the floor, wherein the underside at least partially has a connecting layer which has a non-planar surface on the side facing away from the panel, characterized in that the connecting layer in the position of use is at least partially coated with a damping layer made of plastic.

The non-planar surface on the underside of the panel is created by profiling. By the term "profiling" is meant any regular or irregular patterning of the underside of the panel, be it the immediate embossing or milling of the underside of the panel, or the application of patterned layers, e.g. B. by Bonding of resin-impregnated papers having a structure required for soundproofing.

It has been found that the increase of the sound-absorbing surface, which is accompanied by the profiling, not only has a positive effect on the impact sound insulation, for example by the vertical deflection of the panel, z. B. is converted by a step that hits the top of the panel, in a horizontal movement of the connecting layer, because the protrusions formed by the profiling of the connecting layer are perpendicular to the plate-shaped panel. This design of the connection layer also has a positive effect on the room sound insulation.

The damping layer is connected in the position of use by profiling over a large contact surface with the connecting layer. As a result, the room sound insulation is greatly improved. Due to the profiled, non-planar design of the connecting layer, insulation takes place over a wide frequency range both in the connecting layer and in the damping layer. At the same time, the large common abutment surface of the bonding layer and the damping layer causes the damping layer to be made thin, which saves material and causes the thickness of the panel as a whole to be kept low. The propagation of the spatial noise or the loudness can be attenuated by the invention up to 40% and more.

According to an embodiment of the panel according to the invention, it is expedient to apply the bonding layer at the factory. The full extent of noise reduction is achieved by embedding the tie layer in the cushioning layer. In this case, the damping layer can be applied either factory. However, it can advantageously also cover the connecting layer at least in sections only in the position of use. For example, it is readily possible to design the damping layer on site as a mat and then to lay the panels provided with the bonding layer and to form a covering. The non-planar exterior of the tie layer then projects into the cushioning layer. By embedding the non-planar outer side of the tie layer in the cushioning layer, the full noise insulation reached. If the damping layer is applied at the factory, it can be covered if necessary, eg by a protective paper.

The effectiveness of the insulation according to the invention may be attributed to the fact that when generating vibrations of the panel, ie z. As when running on the panel, the two different plastic layers deform against each other and thereby particularly effective dampen vibrations, which are then destroyed by the fact that they are converted into heat. It is to be assumed that the tips or projections which are located on the underside of the connecting layer, move in the damping layer, and that this kinetic energy is at least partially collected and degraded in the damping layer.

According to an advantageous embodiment of the invention, the panel is equipped with a damping layer which has a plastic of up to 1,600 kg / m ³ , preferably of up to 1,200 kg / m ³ , more preferably of up to 600 kg / m ³ . Plastics in this weight range absorb the vibrations caused by the excitation of the panel particularly well and damp them effectively. It is sufficient a very thin damping layer. According to an advantageous embodiment, the damping layer can be 0.4 mm thick or stronger. The damping layer preferably has a thickness of 0.2-3.0 mm. The cushioning layer preferably has at least such a thickness that the tips or projections of the connection layer are received.

Among the plastics that are particularly suitable for attenuation of the room sound, especially plastic-deformable, so "soft" plastics, which are easy to work with and ensure the permanent effective room sound insulation. Materials with low restoring force, which can be plastically deformed well, are suitable as a damping layer. Typical examples of such plastics include polyolefins, soft ethylene-vinyl acetate, but also polyethylene, in particular polyethylene foam film, in general thermoplastics, also bitumen, butyl rubber, sealing materials or putty and other plastically deformable materials have been found in experiments to be suitable.

The addition of damping bodies to the plastic of the damping layer has proved to be an effective option to attenuate the room sound largely. The use of damping bodies, in particular, if they are designed as a hollow body made of plastic, for example as plastic balls (spherical hollow body), allows a reduction of the noise to unattenuated panels to up to 40% and more. Typical examples of such plastic hollow bodies are Expancel® Microspheres.

While the underside of the panel facing side of the damping layer, which abuts the connection layer according to the invention receives the non-planar configuration in mirror image, according to a preferred embodiment of the invention, the background facing side of the damping layer may be flat. As a result, on the one hand a flat bearing surface is guaranteed. On the other hand, small unevenness of the ground can be compensated by the plastic of the damping layer, especially if a soft and light plastic is used, as described above.

Advantageously, the damping layer is applied to a film which faces away from the bonding layer in the position of use. Preferably, this film is designed as a vapor barrier or vapor barrier.

The damping layer can be designed such that it covers the connecting layer only in sections. Even with a low coverage positive insulation effects are measurable. However, the damping layer preferably covers the entire connecting layer in order to effect the greatest possible insulation.

The connecting layer can be made in a first embodiment of the material of the panel, simply by the underside of the panel is profiled accordingly, for example, embossed or milled, so that the desired non-planar structure is formed. This variant of the invention assumes that the density of the panel is suitable for the production of a bonding layer. Typically, this is z. B. given in HDF panels. In many cases, however, this simple design can not be realized, especially not if the bottom of the panel is provided with a counter-pull or if the panel consists of a too light material.

The second embodiment of the invention provides to make the connecting layer of plastic, which is connected to the underside of the panel. Is in return z. B. the frequently used impregnated with melamine resin paper, a corresponding structural plate could be used during pressing, which gives the counter-pull by molding the thermosetting melamine resin the desired surface.

Preferably, the bonding layer has a density of more than 600 kg / m ³ , preferably the density is more than 900 kg / m ³ , more preferably the density is more than 1,500 kg / m ³ . It has proved to be effective for the bonding layer, if not light plastics are used but rather as heavy as possible plastic. Accordingly, it is also advantageous to use packing for the bonding layer, which are as heavy as possible, for example sword blade or chalk particles. Preferably, hard EVA, which is optionally provided with packing, used for the preparation of the connection insulation. Hard hot melt adhesives were also used in trial trials.

The non-planar surface of the tie layer facing away from the panel has proven to be essential for effective sound attenuation. The tread depth should be at least 0.2 mm, better up to 0.4 mm, preferably up to o, 8 mm, advantageously up to 1.2 mm, particularly advantageously up to 1.5 mm, preferably up to 4.0 mm. In most cases, the tread depth is the thickness of the tie layer. However, it is also possible to choose an embodiment in which the strength of the connecting layer is greater than the profile depth, that is to say when projections, cones or the like whose height is less than the entire connecting layer are produced by the profiling. It is preferred that the profile depth-and thus also the connecting layer-can be kept at a low thickness, so that only a small amount of plastic resin is required.

The non-planar surface can be designed almost arbitrarily. It may be designed in a preferred embodiment pyramid and / or diamond-shaped, the projections that result in a non-planar surface may be cylindrical, spherical and / or polygonal. Preference is given to elongate projections, as they are a cause particularly large surface enlargement and since such projections differ significantly from the orientation of the panel. Particularly preferred is a connecting layer formed with pin-like projections.

Initial tests have shown that in a connecting layer with pyramidal projections, a distance of the projections of 0.2 mm to 0.8 mm, preferably 0.3, -0.5 mm has led to good impact sound and Raumschalldämmwerten.

The impact sound insulation covers according to a preferred embodiment of the invention, the bottom of the panel completely. The complete coating of the underside avoids the formation of cavities, which possibly act as resonance chambers and could counteract the coating according to the invention.

It has already been explained above that the panels can be made of different materials. Often, these are panels made of wood or wood-based materials. Typical are single or three-layer parquet panels made of HDF, MDF or chipboard, in which the problem of sound insulation is particularly clearly measurable and noticeable. However, it is also possible to provide panels of other materials, for example of synthetic resin-bonded mineral plates, extruded panels, generally plastic panels or the like, with the sound insulation according to the invention.

It should be noted at this point that the coating according to the invention of the panel can be attached both to wood-based panels which are not yet divided into individual panels. But it is also possible to provide the finished partitioned panels individually on the bottom with the coating of the invention. It is of course also readily possible to apply the bonding layer on the not yet divided wood-based panels and the insulating layer on the already divided panels.

The object underlying the invention is further achieved by a covering, in particular a floor covering having a plurality of floating on a solid base interconnected panels with a sound-reducing layer on the underside of the panels, wherein the sound-reducing layer at least one connecting layer having a non-planar surface, which is at least partially coated with a cushioning layer made of plastic. The panels described above can be manufactured in different dimensions. In part, large-sized panels of several square meters can be used individually on small areas and act - as described above - insulating. Usually, however, larger areas are to occupy and for easier processing, it is advisable to connect a variety of individual panels to a floor covering, which is laid floating on the ground. The joining of the panels can be done in any way, it can, for. B. done by gluing or by mechanical locking.

According to an advantageous embodiment, it is a covering whose panels are made of wood, wood material and / or plastic. Any material that is suitable for the production of panels, such. As described above, is also suitable for the production of the coating according to the invention. Particleboard, medium-density or high-density fiberboard, OSB boards or plywood are preferably used.

The covering according to the invention is preferably a covering whose panels are provided on the upper side with a decoration and an abrasion-resistant coating. It may be z. B. to a decorative paper with overlay arranged on it or to a decorative finish with a topcoat of abrasion resistant paint. However, it can also be panels with a decorative veneer that is protected by a lacquer layer.

According to an advantageous embodiment, it is a covering, the panels of which are provided with a connecting layer formed integrally on the core of the panel or with a connecting layer fixed on the underside of the panel.

Preferably, the coating according to the invention is designed such that the at least one connecting layer and the damping layer is produced as an independent sound-reducing coating, which is applied to the underside of the panels at the factory or on-site. By carrying out the sound-reducing coating as an independent component, the sound insulation according to the invention is very flexible to handle.

The invention further relates to a sound-reducing coating having a connecting layer made of a hard plastic, which is provided on one side with projections, wherein the projections are embedded in a damping layer made of soft plastic. Materials, use and operation of this sound-reducing coating have already been described above and are explained in more detail in the embodiments. It is to be regarded as a particular advantage in the processing of the sound-reducing coating that also a factory attachment to the panels is possible, which are used for the production of a covering. As a result, any panels can be installed with highly effective sound insulation. The sound-reducing coating according to the invention is preferably used under coverings, in particular floor coverings.

The invention further relates to a method for producing panels, which have a sound insulation. The method according to the invention comprises the following steps: factory-side shaping of the non-planar outside of a connecting layer, in the position of use at least in sections applying a damping layer of plastic to the connecting layer.

In the simplest case, the underside of the panel is formed, in particular if the material of the panel is suitable for this purpose and / or no counter-pull is to be applied to the underside of the panel. The panel can in this case z. B. be provided with projections on the underside with a correspondingly shaped press plate. Often, however, it will be necessary to apply a bonding layer of plastic. This can also be applied in the press on the underside of the panel or it can be subsequently sprayed, foamed, rolled or applied in any other way.

The application of a footfall sound insulation made of plastic is known from the prior art per se. Also, the forms of a non-planar outside of the impact sound insulation is from the DE 202 00 235 known. The sound insulation, which, as explained above, has to take into account both the footfall sound and the room sound, is significantly improved according to the invention, if not just a footfall sound insulation is applied. Rather, at least in sections, another layer of plastic for room sound insulation is applied to the inventively designed connecting layer factory or on site. The at least partially embedding the profiled, non-planar outer side of the connecting layer causes a significantly improved room sound insulation, without the effect of impact sound insulation is impaired.

The application of the insulating layers can be done in many ways, each in coordination with the plastics used and the devices used for applying, for. B. by rolling, knife coating, pouring, foaming, brushing and / or spraying.

The plastics of the bonding and the damping layer are preferably applied in the liquid state to the panel or to the bonding layer. By processing the plastics in a liquid state, the application is particularly uniform and precise and therefore economical.

For most plastics, processing in the liquid state means processing at higher temperatures. The connecting and / or the damping layer is therefore applied according to an advantageous embodiment of the method according to the invention at elevated temperatures, preferably at temperatures of up to 190 ° C, more preferably up to 150 ° C, advantageously up to 100 ° C.

In order to be able to make any necessary further processing steps or to be able to store the panels provided with the sound insulation according to the invention without further storage, it may prove expedient to apply the panels after application of the connection and / or the room sound insulation according to a preferred Cooling execution of the method according to the invention. The cooling can z. B. by blowing cold air.

The production of the non-planar outer side of the connecting layer takes place according to an advantageous embodiment by a profiled molding tool acting on the outside of the connecting layer. As a mold z. As profiled rolls or profiled press plates are used. Profiled press plates are preferably used, when the joint insulation is applied in a press before coating the panels. This is typically done by pressing an aminoplast-impregnated paper with a textured sheet that presses the desired structure into the backing that forms the bottom of the panel. The cured thermoset plastic then shows the non-planar, relatively rigid structures that are characteristic of the bonding layer according to the invention.

According to the invention, the damping layer on the side facing away from the panel, the outside, not profiled. In order to ensure a very uniform contact of the panel with the sound insulation on the ground, according to an advantageous embodiment of the invention may be provided that the outside of the damping layer is smoothed, for example, is peeled off with a doctor blade or rolled smooth.

Finally, the invention relates to an apparatus for producing a panel with sound insulation, comprising means for applying a compound layer of plastic and means for forming a non-planar outer side of this connection layer, characterized in that means for applying a damping layer of plastic are provided on the connection layer ,

A generic device for applying a non-planar connection layer and for shaping the outside of this insulation layer are, inter alia, from DE 202 00 235 known. The known device is supplemented by means for applying a damping layer made of plastic. These means can be designed as rollers, squeegees, casting, brushing and / or spraying device. These means are - as explained above - preferably supplemented by means for heating the plastic, which are connected via means for conveying liquid plastic with the means for applying. Both the means for applying the bonding layer and the means for applying the damping layer may be designed as a means for applying liquid plastic.

In order to further accelerate the further processing or processing of the panels provided with the sound insulation according to the invention, advantageously means for cooling the Damping layer and / or the connection layer may be provided. The means for cooling, for example, cooling air blower, make it possible, for example, apply the room sound insulation as soon as possible after applying and forming the connection insulation. This significantly streamlines production.

The means for forming the non-planar outer side of the connecting layer are preferably designed as profiled tools, for example as profiled rollers or as profiled press plates. These tools act on the outside of the plastic bonding layer and cause plastic deformation. In this way creates an outer side, which has alternately projections and depressions. The projections have surface portions that are non-parallel to the surfaces of the panel. In particular surface portions of the projections, which are approximately perpendicular to the top or bottom of the panel, contribute to improved sound insulation.

According to a preferred embodiment of the device according to the invention, means for smoothing the outside of the damping layer are provided, which are intended to ensure as complete as possible installation of the panel on the ground.

Fig. 1

einen Querschnitt durch eine schematische Darstellung eines mit einer erfindungsgemäßen Schalldämmung versehenen Paneels;

Fig. 2

einen Querschnitt durch eine schematische Darstellung eines mit einer Verbindungsschicht versehenen, schallbelasteten Paneels;

Fig. 3

einen Querschnitt durch eine schematische Darstellung eines mit einer Verbindungsschicht und einer Dämpfungsschicht versehenen, schallbelasteten Paneels;

Fig. 4

einen Querschnitt durch eine schematische Darstellung einer zweiten Ausführungsform eines Paneels;

Fig. 5

einen Querschnitt durch eine schematische Darstellung einer dritten Ausführungsform eines Paneels.

Details of the invention are explained in more detail using the example of an embodiment of the invention. It shows:

Fig. 1

a cross-section through a schematic representation of a provided with a sound insulation panel according to the invention;

Fig. 2

a cross-section through a schematic representation of a provided with a tie layer, sound-loaded panel;

Fig. 3

a cross-section through a schematic representation of provided with a connecting layer and a damping layer, sound-loaded panel;

Fig. 4

a cross-section through a schematic representation of a second embodiment of a panel;

Fig. 5

a cross-section through a schematic representation of a third embodiment of a panel.

Fig. 1 shows a panel 2 with a core 3 made of HDF, the top 4 is sealed with a resin-impregnated decorative paper 6 and an overlay 8. This creates a resilient, wear-resistant panel 2, the z. B. is used as a floor covering. With the underside 10 of the panel 2, a counter-pull 12 made of paper is pressed, which ensures the dimensional stability of the panel 2. The counter-pull 12 counteracts tensile forces which act on the panel 2 when decor paper and overlay 8 are applied.

On the underside 10 of the panel 2, more precisely on the counter-pull 12, a compound layer 14 of hard EVA is applied by means of a profiled roller. The connection layer 14 is not flat. It has projections 17, which are arranged at a distance of o, 6 mm to 1.2 mm side by side. The maximum thickness of the bonding layer 14 is 3 mm, the profile depth, ie the distance between the strongest order and the thinnest application of the bonding layer, is 1.2 mm.

The outer side 13 of the connecting layer 14 is covered by a damping layer 16 made of polyolefins. The damping layer 16 is applied by means of a roller with a chrome-plated surface, which causes a smoothing of the outside of the damping layer 16.

In the position of use, the panel 2 rests on a floor. When walking the panel, the panel 2 is mechanically loaded and vibrated. 2 and 3 illustrate this state. The vibration radiates back to the room, which is designed with the panel 2. The vibration radiates to the other on the floor on which the panel 2 rests and transfers from there to adjacent rooms.

Fig. 2 shows a schematic section of the panel 2, namely its applied on the bottom 10 compound layer 14 of hard EVA. The projections 17 of the connecting layer 14, which are rigid due to the material properties of the hard EVA, vibrate together with the panel 2 when they are walked on. The force is indicated by the arrow A. However, they vibrate - relative to the plane of the panel 2 - approximately perpendicular thereto, see arrow B.

3 shows the projections 17 of the connection layer embedded in the damping layer 16 14. The projections 17 are made of hard EVA and vibrate or try to vibrate in the damping layer 16. By this movement, the vibration of the panel 2 is effectively and effectively degraded. The movement of the projections 17 is first reacted in the damping layer 16 of soft EVA in friction and then in heat. The oscillation of the projections 17 is additionally effectively damped by the damping body 18 contained in the damping layer 16. The damping body 18 are spherical hollow body, which are also made of elastic plastic. This conversion of the introduced by entering the panel 2 vibration energy in friction or heat energy causes an effective improvement of both the impact sound and the room sound insulation. Due to the flat outer side 19 of the damping layer a good support of the panel 2 is ensured on the ground.

4 shows a second embodiment of the panel 2 according to the invention. The panel 2 has a core 3 made of chipboard. The chipboard is not further coated, it should serve as a compensation plate and substrate for a floor covering. For improved sound insulation both in terms of impact sound as well as in terms of the noise, an insulating mat 20 is glued to the bottom 10 of the. The adhesive layer 22 is indicated in FIG. 4.

The insulating mat 20 is a sound-reducing coating. It can be glued on at the factory or on site. It consists of the connecting layer 14 of hard, plastic little deformable plastic (hard EVA) with the projections 17, which protrude into the insulating layer 16. The insulating layer consists of soft, plastically well deformable plastic (soft EVA). The bonding layer 14 is bonded to the insulating layer 16.

The insulating mat 20 is glued to the underside 10 of the panel 2, that the connecting layer rests against the underside 10 of the panel. The adhesive layer 22 may already be applied to the bonding layer 14, so that when joining noise-reducing coating 20 and the panel 2, the two components adhere to each other. This embodiment of the panel 2 according to the invention with the separately executed insulating mat 20 shows the particularly flexible and easy handling of the insulation.

Fig. 5 shows a panel 2, whose core 3 is made of HDF, and which otherwise has the same surface coatings and a similar counter-pull as the panel shown in Fig. 1. The connecting layer 14 with the projections 17 is applied at the factory. The damping layer 16, a 0.8 mm thick, soft EVA layer, is applied to a polyethylene film 24. In the position of use, the panel 2 is placed on the expanded damping layer 16 so that the projections 17 sink into the damping layer 16 and thereby deform plastically.

Claims (37)

Panel with an upper side (4) facing the room in the position of use and a lower side (8) facing the floor, wherein the underside (8) has at least partially a connecting layer (14), wherein the connecting layer (14) on the panel (2 ) facing away from outer side (13) has a non-planar surface,
characterized in that
the connecting layer (14) is at least partially coated with a damping layer (16) made of plastic. Panel according to claim 1, characterized in that the damping layer (16) comprises a plastic having a density of up to 1,600 kg / m ³ , preferably of up to 1,200 kg / m ³ , advantageously of up to 600 kg / m ³ . Panel according to claim 1, characterized in that the plastic of the damping layer (16) comprises a plastically deformable plastic, in particular a plastic or a plastic mixture from a group comprising polyolefins, polyethylene, soft ethylene-vinyl acetate, butyl rubber, luting, bitumen and / or Polyethylene foam film comprises. Panel according to claim 1, characterized in that the plastic of the damping layer (16) contains damping body (18). Panel according to claim 1, characterized in that the damping body (18) as a hollow body, preferably as a spherical hollow body, are formed. Panel according to claim 1, characterized in that the panel (2) facing away from the outside (19) of the damping layer (16) is flat or has a rough surface. Panel according to claim 1, characterized in that the damping layer is applied to a foil which faces away from the connecting layer in the position of use. Panel according to claim 1, characterized in that the damping layer (16) completely covers the connecting layer (14). Panel according to claim 1, characterized in that the connecting layer (14) consists of a different material than the panel (2), in particular consists of plastic. Panel according to claim 1, characterized in that the connecting layer (14) has a density of more than 600 kg / m ³ , preferably of more than 900 kg / m ³ , advantageously of more than 1,500 kg / m ³ . Panel according to claim 1, characterized in that the connecting layer (14) comprises a hard plastic, in particular thermosets such as melamine resin or hard ethylene-vinyl acetate. Panel according to claim 1, characterized in that the outside (13) with the non-planar surface of the connecting layer (14) has a tread depth of up to 4.0 mm, preferably of up to 1.5 mm, preferably of up to 1, 2 mm, more preferably of up to 0.8 mm, more preferably of up to 0.4 mm, advantageously up to 0.2 mm. Panel according to claim 1, characterized in that the outer side (13) of the connecting layer (14) has a geometrically regular or an irregular surface. Panel according to claim 13, characterized in that the outer side (13) of the connection layer (14) has a spigot, diamond-shaped or pyramid-shaped surface. Panel according to claim 1, 13 or 14, characterized in that the distance of projections (17) on the non-planar outer side of the connecting layer (14) is about 0.2 mm to about 0.8 mm. Panel according to claim 1, characterized in that the connecting layer (14) completely covers the underside of the panel (2). Panel according to claim 1, characterized in that the panel (2) made of wood or of a wood material, preferably made of high-density or medium density fiberboard, chipboard or a bonded with synthetic mineral plate. Covering of a plurality of floatingly interconnected panels (2), which are arranged on a solid base, with a sound-reducing layer on the underside (13) of the panels (2), characterized in that the sound-reducing layer at least one connecting layer (14) with a Having non-planar surface, which is at least partially coated with a damping layer (16) made of plastic. Covering according to claim 18, characterized in that its panels (2) of the covering are made of wood, wood material and / or plastic. Covering according to claim 18, characterized in that the panels (2) on the upper side (4) are provided with a decoration and an abrasion-resistant coating (8). Covering according to claim 18, characterized in that its panels (2) are integrally formed with a connecting layer (14) integrally formed on the core (3) of the panel (2) or with a connecting layer (14) fixed on the underside (13) of the panel (2) ) are provided. Covering according to claim 17, characterized in that the at least one connecting layer (14) and the damping layer (16) as a sound-reducing Layer are made and factory or on site on the bottom (13) of the panels (2) are applied. Method for producing panels (2) having sound insulation, with the steps Forming the outer side (13) of a connecting layer (14) to a non-planar surface, - Applying a damping layer (16) made of plastic, which is at least partially applied to the connecting layer (14). A method according to claim 23, characterized in that the connecting layer (14) is made of plastic, which is applied to the underside of the panel (2) prior to forming the outside (13). A method according to claim 23, characterized in that the connecting layer (14) and the damping layer (16) by means of rolling, doctoring, pouring, brushing and / or spraying are applied. A method according to claim 23, characterized in that the plastics of the bonding layer (14) and / or the damping layer (16) are applied in a liquid state. A method according to claim 23 or 26, characterized in that the bonding layer (14) and / or the damping layer (16) at elevated temperatures, preferably at temperatures up to 190 ° C, preferably up to 150 ° C, more preferably from to be applied to 100 ° C. Method according to at least one of the preceding claims 23 to 27, characterized in that the connecting layer (14) and / or the damping layer (16) are cooled after application. A method according to claim 23, characterized in that the outer side (13) of the connecting layer (14) with a profiled molding tool to a non-planar surface is formed, preferably with a profiled roller or by means of a profiled press plate. A method according to claim 23, characterized in that the damping layer (16) is smoothed after application. Device for producing a panel with a sound insulation, comprising Means for forming a non-planar outer side (13) of a connecting layer (14), - Means for applying a damping layer (16) made of plastic on the connecting layer (14) are provided. Acoustic coating having a hard plastic bonding layer (14) unilaterally provided with protrusions (17), the protrusions (17) being embedded in a soft plastic damping layer (16). Panel according to at least one of claims 1 to 17, having a sound-reducing coating with a connecting layer (14) made of a hard plastic, which is provided on one side with projections (17), wherein the projections (17) embedded in a damping layer (16) made of soft plastic are. Covering according to at least one of claims 18 to 22, having a sound-reducing coating with a connecting layer (14) made of a hard plastic, which is provided on one side with projections (17), wherein the projections (17) embedded in a damping layer (16) of soft plastic are. Panel with an upper side (4) facing the room in the position of use and a lower side (8) facing the floor, wherein the underside (8) has at least partially a connecting layer (14), wherein the connecting layer (14) on the panel (2 ) facing away from outer side (13) has a non-planar surface,
characterized in that
the connecting layer (14) is applied at the factory, and that this connecting layer (14) in the position of use is at least partially coated with a damping layer (16) made of plastic. Covering of several floatingly interconnected panels (2), which are arranged on a solid base, with a sound-reducing layer on the underside (13) of the panels (2), characterized in that the sound-reducing layer at least one factory-applied bonding layer (14) having a non-planar surface, which is at least partially coated in the position of use with a damping layer (16) made of plastic. Method for producing panels (2) having sound insulation, with the steps - forming the outer side (13) of a connecting layer (14) to a non-planar surface, - In the use position applying a damping layer (16) made of plastic, which is at least partially applied to the connecting layer (14).

Images